Thermal performance tests for various types of newly built or retrofitted mechanical draft cooling towers have been made

it is considered from obtained results that some problems

such as insufficient air-blast capacity of ventilators

irrationable air distribution in the tower

and serious droplet-floating from dewaterers in winter season etc.

are existing in most mechanical draft towers. Hence

some recommendations for solving said problems are given

providing useful reference for designing and retrofitting mechanical draft towers in the future for petro-chemical and power industries.